Grounds for an Appeal does include errors of fact.
From the Wikipedia -
" An appellate court is a court that hears cases on appeal from another court. Depending on the
particular legal rules that apply to each circumstance, a party to a court case who is unhappy with the
result might be able to challenge that result in an appellate court on specific grounds. These grounds
typically could include errors of law, fact, or procedure (in the United States, due process).
In different jurisdictions, appellate courts are also called appeals courts, courts of appeals, superior
courts, or supreme courts. "